Finished it and the experience levelled me, so now I have it as both success and failure. Here is the log.

<47%hp 100%m 95%mv 25tnl (99.49%)> s
Coffins for the Soon to be Deceased


The shopkeeper steps up to measure you for your coffin.
A drunk man is here singing at the top of his lungs.
The coffinmaker says to you 'I'm terribly sorry, but though you have admirably slain many undead, I can only affort to pay you for six.'
The coffinmaker gives you 10 silver coins, 10 copper coins.

The coffinmaker says to you 'My customers are begining to trust me again, thanks to all your hard work, but I'm afraid I can afford to pay you no more.'
The coffinmaker says to you 'However, I insist you accept this gift as a token of my appreciation.'
The coffinmaker gives you a fine gauzy burial shroud.

(You have gained 350 experience points.)
You raise a level!! Your gain is: 17/280 hp, 6/155 m, 12/276 mv 3/4 prac.
You have learned 1% of your second attack ability.
You failed to complete the quest 'Galadon: Slay the Walking Dead for the Coffinmaker' by level 10.
You are no longer protected from other players. It would be a good idea to pause to review 'help tips', 'help pk' and 'help dying'.
(Unless someone is chasing you right now. Quick, check 'where' and see if it's safe to read helpfiles!)
(You feel as if you understand more about COMMERCE as well.)


And when I type quest to see what I've got, I see:

<63%hp 100%m 78%mv 5222tnl (6.75%)> Completed Quests:
Success, Galadon: Slay the Walking Dead for the Coffinmaker
Failed , Galadon: Slay the Walking Dead for the Coffinmaker
Success, Academy: Fine Leather Gathering
Success, Academy: Simon's Delivery Quest
Success, Udgaard: Deliver Saldria Horseshoes
Success, Aldevari: Gralan's First Task
Success, Aldevari: Gralan's Second Task

Looks weird.

n/t